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Originally posted by Vogad
Right on! ....and for y'all wannabe expects -- a short would cause the circuit breaker to trip!!
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You are making the patently false assumption that all circuit breakers perform flawlessly all of the time.
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Solution: Reduce wattage of bulb (ie; 60 watts) and ensure globe is clean.
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No, that's not a good solution, especially in a kitchen. You want to solve the problem without having to reduce the light output. If you reduce light output, especially in a kitchen, you aren't getting what you should be getting out of the light. Besides, he had lights go after 3 weeks that were 25w under the rated wattage of the fixture.
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An over voltage (ie: 125+ volts) is a probable cause, although 117Volts is ideal - a lot of transformers will supply 120+ depending on the configuration (ie; wye/delta) which is still within industry acceptable limits.
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Lightbulbs are designed for 120 volts. Anything below 120 will extend their life but reduce their maximum output. The main exception is in the "ultra long life" bulbs which cheat by being designed for 130, which does make them last longer, but they're not as bright as the same-wattage bulb in 120.
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And by the way, I've found that quality bulbs (ie; GE / Philips) are worth it instaed of the generic WalMart/ Kmart brands..
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It's mainly luck of the draw, and from the symptoms he is describing, the brand is irrelevant. He has bulbs burning out a week after he installs them. Just about any lightbulb will last longer than a week unless it's abused by conditions in the fixture it's installed in.
Treating the symptoms never cures the problem. He needs to discover the problem rather than trying to slap a bandaid over it.